PETERBILT 579 YEAR 2020 BLACK PLASTIC COOLANT RESERVOIR CAP WITH NIPPLE Heavy Duty Replacement Part

This high-quality replacement coolant reservoir cap is engineered for Peterbilt 579 vehicles from 2020 and newer, offering reliable performance as an aftermarket alternative to OEM specifications. Constructed from durable black plastic, this cap features an integrated nipple design and is compatible with standard coolant reservoir systems found in Peterbilt and Kenworth heavy-duty trucks. The cap is designed with a 1.875-inch inside diameter thread specification and accommodates 15 PSI pressure rating, ensuring safe and effective coolant system sealing during normal operating conditions. The nipple configuration allows for proper coolant circulation and system venting, preventing air locks and maintaining optimal cooling system function in demanding commercial applications. This replacement part is sold individually and represents a cost-effective solution for fleet maintenance, repair shops, and owner-operators requiring reliable coolant system components. The plastic construction provides excellent chemical resistance to standard coolant formulations while remaining lightweight and easy to install. Whether you are managing a large fleet, operating an independent repair facility, or maintaining a single vehicle, this reservoir cap delivers the durability and performance expected in heavy-duty trucking applications. Each cap is manufactured to exacting standards with attention to workmanship and material quality. Installation is straightforward, requiring no special tools or modifications to existing reservoir systems. For fleet operators and maintenance professionals seeking dependable aftermarket components that meet or exceed OEM specifications, this coolant reservoir cap is an ideal replacement solution. Original Model: PETERBILT 579 YEAR 2020 BLACK PLASTIC COOLANT RESERVOIR CAP WITH NIPPLE